150–175mm Three-Point Internal Measuring Calliper With Carbide Measuring Faces, Ratchet, Supplied In Case - Metav IndustryLine

Take advantage of a robust, workshop‑ready internal gauge that combines a three‑point measuring system, wear‑resistant carbide faces and a consistent ratchet stop for reproducible results; order the instrument directly via Metav Werkzeuge or consult our specialists for application advice.

M312.148 Three‑point Internal Micrometer — 150–175 mm range, carbide measuring faces (Metav IndustryLine)

The M312.148 is a three‑point internal micrometer designed for precise internal diameter measurement in machine shops and quality assurance environments.

• Three‑point measuring mechanism
• Carbide measuring faces for wear resistance
• 150–175 mm measuring range
• Ratchet stop for uniform measuring force

High precision for repeatable internal measurement

The instrument’s three‑point contact system provides centring and repeatability that conventional two‑point gauges rarely achieve, making it suitable for internal bores and stepped diameters. With a reading of 0.005 mm and an indicated accuracy of 0.007 mm, this mechanical gauge sits in the higher precision class for analog internal measuring tools; the combination of fine resolution and tight error band reduces rework and supports reliable pass/fail decisions on the shop floor.

Durable construction and consistent operation

Built with carbide measuring faces, the gauge resists wear from repeated contact in production use, prolonging service life and stabilising measurement over time. The scale and vernier are matt chrome‑plated, improving contrast and corrosion resistance under typical workshop conditions. A ratchet stop ensures a consistent measuring force, which lowers operator influence on results and simplifies operator training. The instrument is supplied in a protective transport case and is delivered without a setting ring.

Practical range and workshop suitability

Classified as a standard‑range instrument (max measuring range up to 300 mm), the micrometer’s 150–175 mm span and measuring depth 140 mm cover common internal diameters encountered in general machining, fixture assembly and quality control. As an analogue vernier device it offers robust operation where simple, proven mechanics are preferred over electronics, and it integrates easily into existing inspection workflows while delivering clear, traceable readings.

For procurement or technical advice on the Metav IndustryLine M312.148 three‑point internal micrometer, contact Metav Werkzeuge in Emmerich by e‑mail at info@metav-werkzeuge.com or by phone on +49 2822 7131930 — our product specialists will assist with selection and delivery.

Technical data

• SKU: M312.148
• GTIN: 4054469119540
• Tariff number: 90173000
• EClass: 21170335
• ETIM: EC003590

Core specifications

• Measuring range: 150–175 mm
• Measuring depth: 140 mm
• Reading: 0.005 mm
• Indicated accuracy: 0.007 mm

Materials and features

• Three‑point internal measuring instrument
• Carbide measuring faces
• Scale and vernier matt chrome‑plated
• Ratchet stop for repeatable force
• Analogue vernier operation
• Delivered in a protective transport case
• Supplied without setting ring

FAQ

What measuring range does this instrument cover?
The M312.148 covers an internal measuring range of 150–175 mm, suitable for standard workshop applications.

Are the measuring faces durable for production use?
Yes, the gauge features carbide measuring faces, which provide high wear resistance for repeated production measurements.

Does the product include a setting or calibration ring?
The instrument is delivered without a setting ring; calibration or adjustment accessories must be ordered separately if required.

What type of readout does the instrument use?
This is an analogue vernier instrument with a reading of 0.005 mm and an indicated accuracy of 0.007 mm.

Is the instrument supplied with protective packaging?
The M312.148 is supplied in a protective transport case to safeguard the instrument during storage and transit.

Manufacturer / Responsible: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; Germany; +49 2822 7131930; info@metav-werkzeuge.com